https://business-humanrights.org/sites/default/files/documents/fra-2017-opinion-01-2017-business-human-rights_en.pdf
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/621848/60093_Cm9464_NSS_SDR_Web.pdf
https://s3.eu-central-1.amazonaws.com/euobs-media/59f9f4116a089cec71bf81b76413503a.pdf